HK78694A - Switching power supply - Google Patents

Switching power supply

Info

Publication number
HK78694A
HK78694A HK78694A HK78694A HK78694A HK 78694 A HK78694 A HK 78694A HK 78694 A HK78694 A HK 78694A HK 78694 A HK78694 A HK 78694A HK 78694 A HK78694 A HK 78694A
Authority
HK
Hong Kong
Prior art keywords
voltage
output switch
coupled
switching
power supply
Prior art date
Application number
HK78694A
Inventor
Gerard Dr Ing Rilly
Jose Dipl-Ing Rodriguez
Original Assignee
Thomson Brandt Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson Brandt Gmbh filed Critical Thomson Brandt Gmbh
Publication of HK78694A publication Critical patent/HK78694A/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/338—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/04—Modifications for accelerating switching

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Amplifiers (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

In a switched mode power supply, an output switch is coupled to the primary winding of a transformer and to an input supply voltage derived from the AC mains voltage. A driver stage is coupled to the output switch and to a switched control voltage for producing on-off switching of the output switch between conduction and cutoff to generate a pulse voltage in a secondary winding of the transformer. A supply circuit including a rectifier is coupled to the pulse voltage for generating an operating voltage. A control circuit, responsive to the feedback of the output voltage, modulates the control voltage in a manner that varies the on-off switching of the output switch to stabilize the operating voltage. A bias voltage, derived from the AC mains voltage, and available during a startup interval of the power supply, is coupled to the driver stage during the startup interval. The bias voltage inhibits conduction of the output switch until sufficient time has elapsed after initiation of startup to enable the control circuit to generate a control voltage that is adequate to safely produce the on-off switching of the output switch.
HK78694A 1987-09-29 1994-08-04 Switching power supply HK78694A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873732790 DE3732790A1 (en) 1987-09-29 1987-09-29 SWITCHING POWER SUPPLY

Publications (1)

Publication Number Publication Date
HK78694A true HK78694A (en) 1994-08-12

Family

ID=6337124

Family Applications (1)

Application Number Title Priority Date Filing Date
HK78694A HK78694A (en) 1987-09-29 1994-08-04 Switching power supply

Country Status (10)

Country Link
US (1) US4864485A (en)
EP (1) EP0309867B1 (en)
JP (1) JP2783286B2 (en)
KR (1) KR970011529B1 (en)
AT (1) ATE83099T1 (en)
DE (2) DE3732790A1 (en)
ES (1) ES2036645T3 (en)
GR (1) GR3007205T3 (en)
HK (1) HK78694A (en)
SG (1) SG66393G (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3733474A1 (en) * 1987-09-30 1989-04-20 Thomson Brandt Gmbh SWITCHING POWER SUPPLY
IT1236714B (en) * 1989-10-25 1993-03-26 Sgs Thomson Microelectronics SUPPLY CIRCUIT FOR CONTINUOUS VOLTAGE REGULATOR WITH SWITCHING IN "STEP-UP" CONFIGURATION
DE4008663C1 (en) * 1990-03-17 1991-05-02 Braun Ag, 6000 Frankfurt, De
DE4029221B4 (en) * 1990-09-14 2004-12-30 Deutsche Thomson-Brandt Gmbh Electronic switching power supply
DE4111277A1 (en) * 1991-04-08 1992-10-15 Thomson Brandt Gmbh STARTING CIRCUIT FOR A SWITCHING POWER SUPPLY
DE4125510A1 (en) * 1991-08-01 1993-02-04 Philips Patentverwaltung CIRCUIT ARRANGEMENT WITH A SWITCHING POWER SUPPLY
EP0590716B1 (en) * 1992-10-02 1998-01-07 Koninklijke Philips Electronics N.V. Drive circuit for a flyback converter with switching transistors in bridge arrangement
US6924990B2 (en) * 2003-05-02 2005-08-02 Potentia Semiconductor, Inc. Power supply arrangements
CN103929050B (en) * 2012-09-14 2016-06-01 矽力杰半导体技术(杭州)有限公司 A kind of bias-voltage generating circuit and apply its switch power supply
JP6443088B2 (en) * 2015-01-30 2018-12-26 サンケン電気株式会社 Switching power supply

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063307A (en) * 1976-06-28 1977-12-13 Teletype Corporation Direct current power converter with start-up and protection circuits
JPS5484252A (en) * 1977-12-16 1979-07-05 Sony Corp Switching electric source circuit
US4459651A (en) * 1982-07-01 1984-07-10 Honeywell Information Systems Inc. Regulated flyback power supply using a combination of frequency and pulse width modulation
AT382274B (en) * 1983-02-21 1987-02-10 Elektro Neon Elger Ges M B H USE OF A CIRCUIT ARRANGEMENT FOR DRIVING A SWITCHING TRANSISTOR
US4586120A (en) * 1983-12-30 1986-04-29 At&T Bell Laboratories Current limit shutdown circuit with time delay
FR2579844B1 (en) * 1985-04-02 1987-05-15 Thomson Csf HIGH FREQUENCY OPERATING TRANSISTOR BASE CONTROL CIRCUIT
DE3527000A1 (en) * 1985-07-27 1987-02-05 Thomson Brandt Gmbh SWITCHING POWER SUPPLY
GB2186138B (en) * 1986-01-29 1989-12-06 Thorn Emi Ferguson Television driver circuit
FR2596927B1 (en) * 1986-04-04 1988-05-20 Thomson Csf CUT-OFF POWER PROTECTION CIRCUIT
US4692852A (en) * 1986-06-25 1987-09-08 Rca Corporation Switching power supply with raster width stabilization
US4761723A (en) * 1987-02-27 1988-08-02 Rca Licensing Corporation Power supply regulator for television

Also Published As

Publication number Publication date
DE3876357D1 (en) 1993-01-14
ATE83099T1 (en) 1992-12-15
EP0309867A3 (en) 1989-11-29
JPH01103159A (en) 1989-04-20
EP0309867A2 (en) 1989-04-05
DE3732790A1 (en) 1989-04-13
ES2036645T3 (en) 1993-06-01
US4864485A (en) 1989-09-05
EP0309867B1 (en) 1992-12-02
SG66393G (en) 1993-08-06
KR970011529B1 (en) 1997-07-11
JP2783286B2 (en) 1998-08-06
KR890005957A (en) 1989-05-18
GR3007205T3 (en) 1993-07-30

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Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20040920